4way valve Reverse valve how work why use 4way valve defective how many type problem create Learn by asr service center

VRV, Package,inveter split ac 4way valve Reverse valve how work why use 4way valve defective how many type problem create and how identify reverse valve working principal learn Hindi me very useful video for learning open this link watch  https://youtu.be/f_4tQ4AnBLs  


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